.flex-basis-0 {
    flex-basis: 0;
}

html, body {
    height: 100%;
}

.fl-container {
    display: flex;
    flex-flow: column;
    height: 100%;

    .fl-header {
        display: flex;
        flex: 0 1 auto;
    }

    .fl-section {
        flex: 1 1 auto;
        overflow: hidden;
    }

    .fl-footer {
        display: flex;
        flex: 0 1 auto;
    }
}